Air purifier



FIG. 1 is a perspective view of an air purifier, showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is another side view thereof;

FIG. 6 is a top view thereof; and

FIG. 7 is a bottom view thereof.

FIG. 8 is an enlarged view of the encircled portion 8 of FIG. 1.

FIG. 9 is an enlarged view of the encircled portion 9 of FIG. 1.

FIG. 10 is an enlarged view of the encircled portion 10 of FIG. 2.

FIG. 11 is an enlarged view of the encircled portion 11 of FIG. 3; and,

FIG. 12 is an enlarged view of the encircled portion 12 of FIG. 5.

The broken lines in the figures illustrating portions of the air purifier are for environmental purposes only and form no part of the claimed design.

The dot-dash broken lines encircling enlargement portions of the design form no part of the claimed design. 

CLAIM The ornamental design for an air purifier, as shown and described. 